How to fix (403) Forbidden Error when you are trying to read Feeds of twitter account

Question

I'm trying display User Twitter Feeds on my website i'm getting 403 error in following code.

 var oAuthConKey = "MYKEY";
 var oAuthConSecret="MYSCRET";

            var oAuthUrl = "https://api.twitter.com/oauth2/token";
            var screenname = "nouman_engineer";

            // Do the Authenticate
            var authHeaderFormat = "Basic {0}";

            var authHeader = string.Format(authHeaderFormat,Convert.ToBase64String(Encoding.UTF8.GetBytes(Uri.EscapeDataString(oAuthConKey) + ":" +Uri.EscapeDataString((oAuthConSecret)))
              ));

            var postBody = "grant_type=client_credentials";

            HttpWebRequest authRequest = (HttpWebRequest)WebRequest.Create(oAuthUrl);
            authRequest.Headers.Add("Authorization", authHeader);
            authRequest.Method = "POST";
            authRequest.ContentType = "application/x-www-form-urlencoded;charset=UTF-8";
            authRequest.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;

            using (Stream stream = authRequest.GetRequestStream())
            {
                byte[] content = ASCIIEncoding.ASCII.GetBytes(postBody);
                stream.Write(content, 0, content.Length);
            }

            authRequest.Headers.Add("Accept-Encoding", "gzip");

            WebResponse authResponse = authRequest.GetResponse();
            // deserialize into an object
            TwitAuthenticateResponse twitAuthResponse;
            using (authResponse)
            {
                using (var reader = new StreamReader(authResponse.GetResponseStream()))
                {
                    JavaScriptSerializer js = new JavaScriptSerializer();
                    var objectText = reader.ReadToEnd();
                    twitAuthResponse = JsonConvert.DeserializeObject<TwitAuthenticateResponse>(objectText);
                }
            }

            // Do the timeline
            var timelineFormat = "https://api.twitter.com/1.1/statuses/user_timeline.json?screen_name=  {0}&include_rts=1&exclude_replies=1&count=5";
            var timelineUrl = string.Format(timelineFormat, screenname);
            HttpWebRequest timeLineRequest = (HttpWebRequest)WebRequest.Create(timelineUrl);
            var timelineHeaderFormat = "{0} {1}";
            timeLineRequest.Headers.Add("Authorization", string.Format(timelineHeaderFormat, twitAuthResponse.token_type, twitAuthResponse.access_token));
            timeLineRequest.Method = "Get";
            WebResponse timeLineResponse = timeLineRequest.GetResponse();
            var timeLineJson = string.Empty;
            using (timeLineResponse)
            {
                using (var reader = new StreamReader(timeLineResponse.GetResponseStream()))
                {
                    timeLineJson = reader.ReadToEnd();
                }
            }

but i'm getting error at

Line 105: WebResponse authResponse = authRequest.GetResponse(); with saying that "The remote server returned an error: (403) Forbidden"

Answer 1

I was using TwitterSharp Library Offical version, which has some problems, so i tried Unofficial Version of TwitterSharp Library, and it solved this issue